(a) This part applies to a debtor's petition for hearing provided by 31 U.S.C. 3720D,31.11, and in accordance with the regulations contained in the Employee and Labor Relations Manual, sections 470 and 480.

(b) Under this part, a debtor may challenge:

(1) The existence of a delinquent nontax debt owed to the Postal Service; or

(2) The amount of a delinquent nontax debt owed to the Postal Service.

(c) This part also applies to a hearing under 31 U.S.C. 3720D and 31 CFR 285.11 when a Hearing Official in the Judicial Officer Department is designated as the Hearing Official for a creditor Federal agency other than the Postal Service under an agreement between the Postal Service and that agency. In those cases, all references to Postal Service in this part will be construed to refer to the relevant creditor Federal agency.